8
Concord CXi - Installation
Limitations of Intended Operating Environment
These appliances are NOT suitable for installation where they will
be exposed to the elements.
A boiler room shall be constructed or adapted to meet the
requirements of BS 6644.
The maximum ambient temperature is 32 °C at 1.5 metres from
the floor with a maximum humidity of 90% RH.
FOR SMALL PIPE INSTALLATIONS;
BS. 6891: Installation of low pressure pipework
FOR LARGE PIPE INSTALLATIONS;
British Gas Publication:
IM11: Flues for Commercial and Industrial Gas Fired
Boilers and Air Heaters.
Gas Installations
IGE-UP-1: Purging Procedures of Non-domestic Gas
Installations. Soundness Testing Procedures for
Industrial and Commercial .
IGE-UP-2: Guidance notes on the Installation of Gas Pipework,
Boosters and Compressors in Customer’s Premises
Equal to or Greater than 25mm (Non-domestic).
BS.6644: Installation of Gas Fired Hot Water Boilers 60kW to
2MW.
CP341: Water Supply.
CP342:2: Centralised Hot Water Supply.
Model Water Byelaws
Manufacturers notes must not be taken, in any way, as overriding
statutory obligations.
The appliance must be installed in a room separated from living
rooms and provided with appropriate ventilation direct to the outside
- see Table 6.
GENERAL
automatic reset. In the event of shutdown both visual and
audible alarms may be necessary.
Pressure vessels used must comply with BS. 4814 and must
be sized on the basis of the total system volume and initial
charge pressure.
Initial minimum charge pressure should not be less than 0.5
bar (7.2 psi) and must take account of the static head and
specification of the pressurising equipment. The maximum
water temperatures permissible at the point of minimum
pressure in the system are specified in Guidance Note PM5.
When make up water is not provided automatically it will be
necessary to fit controls which shut down the plant in the event
of the maximum system pressure approaching to within 0.35
bar (5 psi) of the safety valve setting.
Other British Standards applicable to commercial sealed
systems are:-
BS. 6880: Part 2
BS. 1212
BS. 6281: Part 1
BS. 6282: Part 1
BS. 6283: Part 4
Working pressure 4.5 bar maximum.
Particular reference should be made to BS. 6644: Section 2;
Subsection 11 and Guidance note PM5 "Automatically controlled
steam and hot water boilers" published by the Health and Safety
Executive.
The information and guidance given below is not intended to
override any requirements of either of the above publications or
the requirements of the local authority, gas or water undertakings.
In general commercial closed pressurised systems are provided
with either manual or automatic water make up.
On both instances it will be necessary to fit automatic controls
intended to protect the boiler, circulating system and ancillary
equipment by shutting down the boiler plant if a potentially
hazardous situation should arise.
Examples of such situations are low water level and operating
pressure or excessive pressure within the system. Depending
on circumstances, controls will need to be either manual or
depending upon ambient temperature, may be high enough to
evaporate a large portion of the system water capacity over a full
heating season.
There will always be corrosion within a heating or hot water system
to a greater or lesser degree, irrespective of water characteristics,
unless the initial fill water from the mains is treated. Even the
water in closed systems will promote corrosion unless treated.
For the reason stated Caradon Plumbing Limited strongly
recommend that when necessary the system is thoroughly cleaned,
prior to the use of stable inhibitor, which does not require continual
topping up to combat the effects of hardness salts and corrosion
on the heat exchangers of the boiler and associated systems.
Caradon Plumbing Limited advise contact directly with specialists
on water treatment such as:
Fernox Manufacturing Co. Ltd., or Sentinel Division,
Tandem House, Marlowe Way Betz Dearborn Ltd.,
Croydon. Widnes,
Surrey CRO 4XS Cheshire, WA8 8UD
Tel 0870 5601 5000 Tel. 0151 424 5351.
INSTALLATION REQUIREMENTS
The appliance must be installed by a CORGI registered installer,
identified by
.
The installation of the boiler must be in accordance with the relevant
requirements of the Gas Safety Regulations, current I.E.E.
(BS.7671) Regulations, Model Water Bye-laws, local water
authority bye-laws and it should also comply with any relevant
requirements of the local gas supplier, local authority and the
relevant British Standard Codes of practice and building
regulations.
4
SEALED (PRESSURISED) SYSTEMS
To Next Page
Loading...
Need help?
General